CaratHunter
Plans
Heart|Lab Grown|IGI

1.28ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG752551204

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG752551204

Diamond specifications and retailer prices

From HK$1,434 HKD
As of November 6, 2026
Save HK$7,486 HKD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$8,920 HKD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.28ct lab-grown heart diamond

This 1.28ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG752551204 or 752551204. Listed at 18 retailers as of November 6, 2026, with prices from HK$1,434 to HK$8,920, a HK$7,486 spread on the same certified stone. Reve Diamonds lists it at HK$8,920. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.28
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG752551204
Dimensions7.49 × 6.58 × 4.49 mm
L/W Ratio1.14
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.49 mm6.58 mm1.28 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG752551204
Side View
Table 62.0%Crown 37.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$3,166 HKD|Low: HK$1,372 HKD|High: HK$8,935 HKD|Avg: HK$3,606 HKD|+3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 11HK$1,434 HKD
Retailer 10HK$1,599 HKD
Retailer 2HK$1,662 HKD
Retailer 3HK$1,771 HKD
Retailer 12HK$1,771 HKD
Retailer 5HK$2,390 HKD
Retailer 1HK$3,166 HKD
Retailer 4HK$3,731 HKD
Retailer 8HK$3,958 HKD
Retailer 7HK$4,224 HKD
Retailer 13HK$5,706 HKD
Retailer 9HK$6,740 HKD
Retailer 6HK$8,268 HKD

45 data points across 13 retailers

18 retailersHK$1,434 HKD to HK$8,920 HKD

A
Cheapest Retailer
-
HK$1,434 HKD
A
Retailer 2
-
HK$1,599 HKD
View
Final sale: no returns
A
Retailer 3
-
HK$1,662 HKD
View
A
Retailer 4
-
HK$1,771 HKD
View
Retailer 5
-
HK$1,771 HKD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
HK$2,390 HKD
View
A
Retailer 7
-
HK$3,166 HKD
View
B+
Retailer 8
-
HK$3,456 HKD
View
B+
Retailer 9
-
HK$3,731 HKD
View
B+
Retailer 10
-
HK$3,958 HKD
View
B+
Retailer 11
-
HK$4,224 HKD
View
Retailer 12
-
HK$4,491 HKD
View
Price last confirmed 11 days ago
B
Retailer 13
-
HK$5,706 HKD
View
B
Retailer 14
-
HK$5,784 HKD
View
B
Retailer 15
-
HK$6,129 HKD
View
B
Retailer 16
-
HK$6,740 HKD
View
B
Retailer 17
-
HK$8,268 HKD
View
Most Expensive
B
Reve Diamonds
6E563C587 · Nov 6
HK$8,920 HKD
$1,138 USD
View
17 more retailers have this diamond
Prices start from HK$1,434 HKDSave up to HK$7,486 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.28ct Heart
HK$1,434 HKD